(19)

(11)

EP 1 847 087 A1

(12)

(43) Date of publication: 24.10.2007 Bulletin 2007/43 (21) Application number: 05707967.5 (22) Date of filing: 08.02.2005

(51) International Patent Classification (IPC):  H04L 29/06(2006.01) (86) International application number: PCT/EP2005/050544 (87) International publication number: WO 2006/084503 (17.08.2006 Gazette 2006/33)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (71) Applicant: Telefonaktiebolaget LM Ericsson (publ) 164 83 Stockholm (SE)	(72) Inventors: HORN, Uwe 52066 Aachen (DE) LOHMAR, Thorsten 52074 Aachen (DE) (74) Representative: Tonscheidt, Andreas  Ericsson GmbH Ericsson Allee 1 52134 Herzogenrath 52134 Herzogenrath (DE)